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author | Marek Olšák <maraeo@gmail.com> | 2011-02-15 01:41:16 +0100 |
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committer | Marek Olšák <maraeo@gmail.com> | 2011-02-15 04:00:46 +0100 |
commit | 18b4978ac8d2fb9b4f0830f33267e36ffc67b89c (patch) | |
tree | 7b35ed68236ce9b3b5e1f2a7bb7cab8f13d12720 /src/gallium/drivers/r300/r300_flush.c | |
parent | 4faf11ad6c44902e17c648c28d40e10067f83612 (diff) | |
download | external_mesa3d-18b4978ac8d2fb9b4f0830f33267e36ffc67b89c.zip external_mesa3d-18b4978ac8d2fb9b4f0830f33267e36ffc67b89c.tar.gz external_mesa3d-18b4978ac8d2fb9b4f0830f33267e36ffc67b89c.tar.bz2 |
r300g: implement fences using dummy relocations
So finally we have them.
Diffstat (limited to 'src/gallium/drivers/r300/r300_flush.c')
-rw-r--r-- | src/gallium/drivers/r300/r300_flush.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/src/gallium/drivers/r300/r300_flush.c b/src/gallium/drivers/r300/r300_flush.c index 0db1365..bfc15ce 100644 --- a/src/gallium/drivers/r300/r300_flush.c +++ b/src/gallium/drivers/r300/r300_flush.c @@ -37,11 +37,23 @@ static void r300_flush(struct pipe_context* pipe, { struct r300_context *r300 = r300_context(pipe); struct r300_atom *atom; - struct r300_fence **rfence = (struct r300_fence**)fence; + struct r300_winsys_bo **rfence = (struct r300_winsys_bo**)fence; if (r300->draw && !r300->draw_vbo_locked) r300_draw_flush_vbuf(r300); + if (rfence) { + /* Create a fence, which is a dummy BO. */ + *rfence = r300->rws->buffer_create(r300->rws, 1, 1, + PIPE_BIND_VERTEX_BUFFER, + PIPE_USAGE_STATIC, + R300_DOMAIN_GTT); + /* Add the fence as a dummy relocation. */ + r300->rws->cs_add_reloc(r300->cs, + r300->rws->buffer_get_cs_handle(*rfence), + R300_DOMAIN_GTT, R300_DOMAIN_GTT); + } + if (r300->dirty_hw) { r300_emit_hyperz_end(r300); r300_emit_query_end(r300); @@ -70,16 +82,17 @@ static void r300_flush(struct pipe_context* pipe, r300->upload_vb_validated = FALSE; r300->upload_ib_validated = FALSE; } else { - /* Even if hw is not dirty, we should at least reset the CS in case - * the space checking failed for the first draw operation. */ - r300->rws->cs_flush(r300->cs); - } - - /* Create a new fence. */ - if (rfence) { - *rfence = CALLOC_STRUCT(r300_fence); - pipe_reference_init(&(*rfence)->reference, 1); - (*rfence)->ctx = r300; + if (rfence) { + /* We have to create a fence object, but the command stream is empty + * and we cannot emit an empty CS. We must write some regs then. */ + CS_LOCALS(r300); + OUT_CS_REG(RB3D_COLOR_CHANNEL_MASK, 0); + r300->rws->cs_flush(r300->cs); + } else { + /* Even if hw is not dirty, we should at least reset the CS in case + * the space checking failed for the first draw operation. */ + r300->rws->cs_flush(r300->cs); + } } } |